Published : May 30, 2026 2:20 PM IST
The summer season could be particularly challenging to manage diabetes or keep blood sugar levels normal. Experts suggest that Changes in daily habits, temperature and dehydration can all impact the regulation of glucose. While many people may not realise several seasonal factors can trigger blood sugar fluctuations which are not associated with diet. Below are five major factors that can spike blood sugar levels during summer:
Many people change their workout routine during the summer months. There are people who are more active if they can be outdoors, walking or travelling more whereas others are less active due to excess heat. Experts suggest that increased physical activity can help reduce blood sugar while sitting idle might spike glucose levels. Regular physical activity is crucial for proper blood sugar control.
Summer vacations, social events and outdoor activities can result in irregular eating habits that can affect your blood sugar levels. Often people end up indulging in sugar-based drinks, ice ladders, sweets and snack foods during vacation which can lead to a sudden rise in blood sugar.
Some diabetes drugs such as insulin, are sensitive to temperature changes because they may not be as effective if they are exposed to too much heat. Uncontrolled blood sugar levels may be associated with improperly used insulin. It is important to follow storage instructions and keep medications protected from direct sunlight and high temperatures.
With high temperatures the way the body utilizes insulin can be directly affected. Heat can cause the blood flow to rush which can speed up the absorption of insulin. This can occasionally cause a drop in blood sugar particularly for individuals who are using insulin or some diabetes drug. Excessive exposure to heat may also add additional stress to the body affecting glucose control.
Dehydration is one of the most frequent cause of summertime illness. Too much perspiring and not enough water will decrease the amount of water in the blood stream and increase the concentration of blood sugar. Dehydration can also impair kidney function and make it difficult to get rid of extra glucose in the urine. Disclaimer: this article is for informational purposes only and is not medical advice. Always consult a healthcare professional for concerns about blood sugar levels or diabetes management.